Question

question 13
what are two services performed by the data link layer of the osi model? (choose two.)
□ it provides media access control and performs error detection.
□ it monitors the layer 2 communication by building a mac address table.
□ it accepts layer 3 packets and encapsulates them into frames.
□ it fragments data packets into the mtu size.
□ it determines the path to forward packets.

Explanation:

The data - link layer (Layer 2) of the OSI model has several key functions. It provides media access control to regulate how devices access the shared communication medium and performs error - detection to check for transmission errors. It also accepts Layer 3 (network layer) packets and encapsulates them into frames for transmission over the physical medium. Monitoring Layer 2 communication by building a MAC address table is mainly a function of switches which operate at the data - link layer but is not a core service of the layer itself. Fragmenting data packets into the MTU size is more related to the network layer in some cases and not a main service of the data - link layer. Determining the path to forward packets is a function of the network layer (Layer 3).

Answer:

It provides media access control and performs error detection.
It accepts Layer 3 packets and encapsulates them into frames.